| NGC 1980 | |
|---|---|
 DSS image of theopen cluster NGC 1980, located on the southern tip of theOrion Nebula, and the nebulaNGC 1982 (M43) located on its northern edge | |
| Observation data (J2000.0epoch) | |
| Right ascension | 05h 25m 26.0s[1] |
| Declination | −05° 54′ 36″[1] |
| Distance | 1793 ly[2] (550 pc[2]) |
| Apparent magnitude (V) | 2.5[3] |
| Apparent dimensions (V) | 14.00 x 14.0[4] |
| Physical characteristics | |
| Estimated age | 4.7 million |
| Other designations | Lower Sword,[5]Collinder 72, OCL 529, WH V 31 |
| Associations | |
| Constellation | Orion |
| See also:Open cluster,List of open clusters | |
NGC 1980 (also known asOCL 529,Collinder 72 andThe Lost Jewel of Orion[6]) is a youngopen cluster associated with anemission nebula in the constellationOrion. It was discovered byWilliam Herschel on 31 January 1786.[7] Its apparent size is 14 × 14arc minutes and it is located around the starIota Orionis on the southern tip of the Orion constellation.[4][8]
Herschel made his first observation of the cluster which was called WH V 31 on 31 January 1786, but he possibly observed it during his studies of double stars on 20 September 1783.[7]
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